From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752248AbbAXAOE (ORCPT ); Fri, 23 Jan 2015 19:14:04 -0500 Received: from h1446028.stratoserver.net ([85.214.92.142]:43331 "EHLO mail.ahsoftware.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750820AbbAXAN7 (ORCPT ); Fri, 23 Jan 2015 19:13:59 -0500 Message-ID: <54C2E3AB.9000008@ahsoftware.de> Date: Sat, 24 Jan 2015 01:13:31 +0100 From: Alexander Holler User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: David Howells CC: linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, Michal Marek , Linus Torvalds Subject: Re: [PATCH] modsign: overwrite keys with zero before deleting them References: <1422050221-28345-1-git-send-email-holler@ahsoftware.de> <1421976009-9819-1-git-send-email-holler@ahsoftware.de> <6705.1422057490@warthog.procyon.org.uk> In-Reply-To: <6705.1422057490@warthog.procyon.org.uk> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 24.01.2015 um 00:58 schrieb David Howells: > Alexander Holler wrote: > >> This is for the more paranoid people, also it's >> questionable what paranoid nowadays means. > > shred? Seems to do the same like when using dd, just that it does it moultiple times. And according to an article I've read some years ago, overwrriting a blocks on harddisks multiple times doesn't really make sense because doing it just once is enough (the necessity to do it multiple times seems to have been one of these unexplainable myths in the IT) . So I've no idea if it's worth to use shred and have no idea if it's part of any GNU/Linux system (seems likely as it it's part of coreutils), how it's maintained and how long it will be available. But if requested, I will replace that dd with shred or just feel free to do it yourself. Regards, Alexander Holler